Find the sum of all odd integers less than 450.

Find the sum of odd integers from 1 to 2001.

Write the following in Set-Builder form. The set of all odd natural number less than 15.

Which of the following sets are empty sets? Justify your answer. (i) A={x : x^(2)=4 and 3x=9} (ii) The set of all triangles in a plane having the sum of their three angles less than 180.

State whether the following sets are finite or infinite. The set of all positive integers greater than 50.

Write the following in Set-Builder form. The set of all whole numbers less than 20.

The number of positive integers less than 40,000 that can be formed by using all the digits 1, 2, 3, 4 and 5 is equal to

A is the set of all prime number less than 10. then number of relations in A is

Verify the Existence of inverse for the arithmetic operation + on the set of all odd integers Z_(0) .